Weekly Factor Returns
- Brian
- Sep 29
- 2 min read
A look at what factors influenced the market last week
Equities were lower, breaking the streak of three positive consecutive weeks. The Russell 2000 dropped the most with a 0.58% decline.
All factor returns were within normal ranges.
Both measures of Momentum were negative. Medium-term momentum (MTM) and Short-term momentum (STM) declined the most in the large and mid cap universes. Stocks that had outperformed the most over the past six months and four weeks tended to underperform last week.
Value was positive and had the most consistent spreads among the factors. The most attractively valued stocks outperformed the least attractively valued by over 1.0% in each index. Value was most influential in the Russell 1000.
Volatility declined. Negative Volatility was most prominent within the large and mid cap spaces. The most volatile stocks underperformed the least volatile by 2.98% in the Russell 1000 and by 2.73% in the Russell MidCap.
Size experienced the most divergent spreads. The largest stocks outperformed the smallest stocks in the large cap universe. The opposite was true in the mid and small indices. The largest stocks underperformed the smallest stocks by 1.94% in the Russell 2000.

In this series, we highlight several factors’ returns along with the broad index. These are factors – or stock characteristics – we monitor closely. Factor returns equal the difference in the average return of the highest ranked 10% (decile 1) of stocks minus the lowest ranked 10% (decile 10) within each metric. Returns are based on stocks that pass our screen for liquidity, price, and analyst coverage; therefore, some index constitutes are excluded (except for index return). Ranks are sector neutral and equal weight. Stocks are ranked one week before the return period date, with returns calculated for the following week.
Read factor explanations here.
The Russell 1000 Index is a U.S. stock market index that tracks the highest-ranking 1,000 stocks in the Russell 3000 Index, which represent about 93% of the total market capitalization of that index.Â
The Russell Midcap Index is a stock market index that measures performance of the 800 smallest companies in the Russell 1000 Index.Â
The Russell 2500 Index measures the performance of the 2,500 smallest companies in the Russell 3000 Index, with a weighted average market capitalization of approximately $4.3 billion, median capitalization of $1.2 billion and market capitalization of the largest company of $18.7 billion.
The Russell 2000 Index is a small-cap U.S. stock market index that makes up the smallest 2,000 stocks in the Russell Index. It was started by the Frank Russell Company in 1984. The index is maintained by FTSE Russell, a subsidiary of the London Stock Exchange Group.Â
Index performance is presented as a benchmark for reference only and does not imply any portfolio will achieve similar returns, volatility or any characteristics similar to any actual portfolio. The composition of a benchmark index may not reflect the manner in which any is constructed in relation to expected or achieved returns, investment holdings, sectors, correlations, concentrations or tracking error targets, all of which are subject to change over time. You cannot invest directly in an index. Index performance does not reflect the deduction of any investment management fees, transaction costs, or expenses, and the performance of any investment product may differ from the index.